/*
 * Gritter for jQuery
 * http://www.boedesign.com/
 *
 * Copyright (c) 2012 Jordan Boesch
 * Dual licensed under the MIT and GPL licenses.
 *
 * Date: February 24, 2012
 * Version: 1.7.4
 */

(function($){
     
    /**
    * Set it up as an object under the jQuery namespace
    */
    $.gritter = {};
    
    /**
    * Set up global options that the user can over-ride
    */
    $.gritter.options = {
        position: '',
        class_name: '', // could be set to 'gritter-light' to use white notifications
        fade_in_speed: 'medium', // how fast notifications fade in
        fade_out_speed: 1000, // how fast the notices fade out
        time: 6000 // hang on the screen for...
    }
    
    /**
    * Add a gritter notification to the screen
    * @see Gritter#add();
    */
    $.gritter.add = function(params){

        try {
            return Gritter.add(params || {});
        } catch(e) {
        
            var err = 'Gritter Error: ' + e;
            (typeof(console) != 'undefined' && console.error) ? 
                console.error(err, params) : 
                alert(err);
                
        }
        
    }
    
    /**
    * Remove a gritter notification from the screen
    * @see Gritter#removeSpecific();
    */
    $.gritter.remove = function(id, params){
        Gritter.removeSpecific(id, params || {});
    }
    
    /**
    * Remove all notifications
    * @see Gritter#stop();
    */
    $.gritter.removeAll = function(params){
        Gritter.stop(params || {});
    }
    
    /**
    * Big fat Gritter object
    * @constructor (not really since its object literal)
    */
    var Gritter = {
        
        // Public - options to over-ride with $.gritter.options in "add"
        position: '',
        fade_in_speed: '',
        fade_out_speed: '',
        time: '',
        
        // Private - no touchy the private parts
        _custom_timer: 0,
        _item_count: 0,
        _is_setup: 0,
        _tpl_close: '<a class="gritter-close" href="javascript:;" tabindex="1">Close Notification</a>',
        _tpl_title: '<span class="gritter-title">[[title]]</span>',
        _tpl_item: '<div id="gritter-item-[[number]]" class="gritter-item-wrapper [[item_class]]" style="display:none" role="alert"><div class="gritter-top"></div><div class="gritter-item">[[close]][[image]]<div class="[[class_name]]">[[title]]<p>[[text]]</p></div><div style="clear:both"></div></div><div class="gritter-bottom"></div></div>',
        _tpl_wrap: '<div id="gritter-notice-wrapper"></div>',
        
        /**
        * Add a gritter notification to the screen
        * @param {Object} params The object that contains all the options for drawing the notification
        * @return {Integer} The specific numeric id to that gritter notification
        */
        add: function(params){
            // Handle straight text
            if(typeof(params) == 'string'){
                params = {text:params};
            }

            // We might have some issues if we don't have a title or text!
            if(params.text === null){
                throw 'You must supply "text" parameter.'; 
            }
            
            // Check the options and set them once
            if(!this._is_setup){
                this._runSetup();
            }
            
            // Basics
            var title = params.title, 
                text = params.text,
                image = params.image || '',
                sticky = params.sticky || false,
                item_class = params.class_name || $.gritter.options.class_name,
                position = $.gritter.options.position,
                time_alive = params.time || '';

            this._verifyWrapper();
            
            this._item_count++;
            var number = this._item_count, 
                tmp = this._tpl_item;
            
            // Assign callbacks
            $(['before_open', 'after_open', 'before_close', 'after_close']).each(function(i, val){
                Gritter['_' + val + '_' + number] = ($.isFunction(params[val])) ? params[val] : function(){}
            });

            // Reset
            this._custom_timer = 0;
            
            // A custom fade time set
            if(time_alive){
                this._custom_timer = time_alive;
            }
            
            var image_str = (image != '') ? '<img src="' + image + '" class="gritter-image" />' : '',
                class_name = (image != '') ? 'gritter-with-image' : 'gritter-without-image';
            
            // String replacements on the template
            if(title){
                title = this._str_replace('[[title]]',title,this._tpl_title);
            }else{
                title = '';
            }
            
            tmp = this._str_replace(
                ['[[title]]', '[[text]]', '[[close]]', '[[image]]', '[[number]]', '[[class_name]]', '[[item_class]]'],
                [title, text, this._tpl_close, image_str, this._item_count, class_name, item_class], tmp
            );

            // If it's false, don't show another gritter message
            if(this['_before_open_' + number]() === false){
                return false;
            }

            $('#gritter-notice-wrapper').addClass(position).append(tmp);
            
            var item = $('#gritter-item-' + this._item_count);
            
            item.fadeIn(this.fade_in_speed, function(){
                Gritter['_after_open_' + number]($(this));
            });
            
            if(!sticky){
                this._setFadeTimer(item, number);
            }
            
            // Bind the hover/unhover states
            $(item).bind('mouseenter mouseleave', function(event){
                if(event.type == 'mouseenter'){
                    if(!sticky){ 
                        Gritter._restoreItemIfFading($(this), number);
                    }
                }
                else {
                    if(!sticky){
                        Gritter._setFadeTimer($(this), number);
                    }
                }
                Gritter._hoverState($(this), event.type);
            });
            
            // Clicking (X) makes the perdy thing close
            $(item).find('.gritter-close').click(function(){
                Gritter.removeSpecific(number, {}, null, true);
                return false;
            });
            
            return number;
        
        },
        
        /**
        * If we don't have any more gritter notifications, get rid of the wrapper using this check
        * @private
        * @param {Integer} unique_id The ID of the element that was just deleted, use it for a callback
        * @param {Object} e The jQuery element that we're going to perform the remove() action on
        * @param {Boolean} manual_close Did we close the gritter dialog with the (X) button
        */
        _countRemoveWrapper: function(unique_id, e, manual_close){
            
            // Remove it then run the callback function
            e.remove();
            this['_after_close_' + unique_id](e, manual_close);
            
            // Check if the wrapper is empty, if it is.. remove the wrapper
            if($('.gritter-item-wrapper').length == 0){
                $('#gritter-notice-wrapper').remove();
            }
        
        },
        
        /**
        * Fade out an element after it's been on the screen for x amount of time
        * @private
        * @param {Object} e The jQuery element to get rid of
        * @param {Integer} unique_id The id of the element to remove
        * @param {Object} params An optional list of params to set fade speeds etc.
        * @param {Boolean} unbind_events Unbind the mouseenter/mouseleave events if they click (X)
        */
        _fade: function(e, unique_id, params, unbind_events){

            var params = params || {},
                fade = (typeof(params.fade) != 'undefined') ? params.fade : true,
                fade_out_speed = params.speed || this.fade_out_speed,
                manual_close = unbind_events;

            this['_before_close_' + unique_id](e, manual_close);
            
            // If this is true, then we are coming from clicking the (X)
            if(unbind_events){
                e.unbind('mouseenter mouseleave');
            }
            
            // Fade it out or remove it
            if(fade){
            
                e.animate({
                    opacity: 0
                }, fade_out_speed, function(){
                    e.animate({ height: 0 }, 300, function(){
                        Gritter._countRemoveWrapper(unique_id, e, manual_close);
                    })
                })
                
            }
            else {
                
                this._countRemoveWrapper(unique_id, e);
                
            }
                        
        },
        
        /**
        * Perform actions based on the type of bind (mouseenter, mouseleave) 
        * @private
        * @param {Object} e The jQuery element
        * @param {String} type The type of action we're performing: mouseenter or mouseleave
        */
        _hoverState: function(e, type){
            
            // Change the border styles and add the (X) close button when you hover
            if(type == 'mouseenter'){
                
                e.addClass('hover');
                
                // Show close button
                e.find('.gritter-close').show();
                        
            }
            // Remove the border styles and hide (X) close button when you mouse out
            else {
                
                e.removeClass('hover');
                
                // Hide close button
                e.find('.gritter-close').hide();
                
            }
            
        },
        
        /**
        * Remove a specific notification based on an ID
        * @param {Integer} unique_id The ID used to delete a specific notification
        * @param {Object} params A set of options passed in to determine how to get rid of it
        * @param {Object} e The jQuery element that we're "fading" then removing
        * @param {Boolean} unbind_events If we clicked on the (X) we set this to true to unbind mouseenter/mouseleave
        */
        removeSpecific: function(unique_id, params, e, unbind_events){
            
            if(!e){
                var e = $('#gritter-item-' + unique_id);
            }

            // We set the fourth param to let the _fade function know to 
            // unbind the "mouseleave" event.  Once you click (X) there's no going back!
            this._fade(e, unique_id, params || {}, unbind_events);
            
        },
        
        /**
        * If the item is fading out and we hover over it, restore it!
        * @private
        * @param {Object} e The HTML element to remove
        * @param {Integer} unique_id The ID of the element
        */
        _restoreItemIfFading: function(e, unique_id){
            
            clearTimeout(this['_int_id_' + unique_id]);
            e.stop().css({ opacity: '', height: '' });
            
        },
        
        /**
        * Setup the global options - only once
        * @private
        */
        _runSetup: function(){
        
            for(opt in $.gritter.options){
                this[opt] = $.gritter.options[opt];
            }
            this._is_setup = 1;
            
        },
        
        /**
        * Set the notification to fade out after a certain amount of time
        * @private
        * @param {Object} item The HTML element we're dealing with
        * @param {Integer} unique_id The ID of the element
        */
        _setFadeTimer: function(e, unique_id){
            
            var timer_str = (this._custom_timer) ? this._custom_timer : this.time;
            this['_int_id_' + unique_id] = setTimeout(function(){ 
                Gritter._fade(e, unique_id);
            }, timer_str);
        
        },
        
        /**
        * Bring everything to a halt
        * @param {Object} params A list of callback functions to pass when all notifications are removed
        */  
        stop: function(params){
            
            // callbacks (if passed)
            var before_close = ($.isFunction(params.before_close)) ? params.before_close : function(){};
            var after_close = ($.isFunction(params.after_close)) ? params.after_close : function(){};
            
            var wrap = $('#gritter-notice-wrapper');
            before_close(wrap);
            wrap.fadeOut(function(){
                $(this).remove();
                after_close();
            });
        
        },
        
        /**
        * An extremely handy PHP function ported to JS, works well for templating
        * @private
        * @param {String/Array} search A list of things to search for
        * @param {String/Array} replace A list of things to replace the searches with
        * @return {String} sa The output
        */  
        _str_replace: function(search, replace, subject, count){
        
            var i = 0, j = 0, temp = '', repl = '', sl = 0, fl = 0,
                f = [].concat(search),
                r = [].concat(replace),
                s = subject,
                ra = r instanceof Array, sa = s instanceof Array;
            s = [].concat(s);
            
            if(count){
                this.window[count] = 0;
            }
        
            for(i = 0, sl = s.length; i < sl; i++){
                
                if(s[i] === ''){
                    continue;
                }
                
                for (j = 0, fl = f.length; j < fl; j++){
                    
                    temp = s[i] + '';
                    repl = ra ? (r[j] !== undefined ? r[j] : '') : r[0];
                    s[i] = (temp).split(f[j]).join(repl);
                    
                    if(count && s[i] !== temp){
                        this.window[count] += (temp.length-s[i].length) / f[j].length;
                    }
                    
                }
            }
            
            return sa ? s : s[0];
            
        },
        
        /**
        * A check to make sure we have something to wrap our notices with
        * @private
        */  
        _verifyWrapper: function(){
          
            if($('#gritter-notice-wrapper').length == 0){
                $('body').append(this._tpl_wrap);
            }
        
        }
        
    }
    
})(jQuery);
